"""
Case Type   : 分区表锁降级
Case Name   : 分区表某一分区插入数据,不相邻分区同时更新数据
Create At   : 2021/8/23
Owner       : opentestcase001
Description :
    1、创建范围分区表;
    2、向分区3中插入数据;
    3、session1中向分区1插入数据;
    4、session2中同时在分区3更新数据;
    5、查看分区数据;
    6、清理环境;
Expect      :
    1、创建范围分区表成功;
    2、插入数据成功;
    3、session1中插入数据成功;
    4、session2中同时更新数据成功，未阻塞;
    5、查看分区数据成功;
    6、清理环境成功;
History     :
    因机器性能问题用例执行时间不一致会偶现失败，
    优化用例，减少分区数据，控制用例执行时长，不影响功能验证
"""

import unittest
import time
from testcase.utils.ComThread import ComThread
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.CommonSQL import CommonSQL
from testcase.utils.Logger import Logger


class LockLevel(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info('--Opengauss_Function_Lower_Lock_Level_Case0004开始执行--')
        self.constant = Constant()
        self.comsh = CommonSH('PrimaryDbUser')
        self.comSQL = CommonSQL('PrimaryDbUser')
        self.table_name = 't_locklevel_0004'
        self.i_function_name = 'f_insert_locklevel_0004'
        self.u_function_name = 'f_update_locklevel_0004'

    def test_lock_level(self):
        self.log.info('------创建插入数据函数------')
        func_var = 'pvar'
        func_sql1 = f'''insert into {self.table_name} values({func_var},1);'''
        insert_func = self.comSQL.create_func(self.i_function_name,
                                              execute_sql=func_sql1,
                                              var=func_var,
                                              start=20000,
                                              end=80000,
                                              step=20000)
        self.log.info(insert_func)
        self.assertTrue(self.i_function_name in insert_func)

        self.log.info('------创建更新数据函数------')
        func_sql2 = f'''update {self.table_name} set id2 = 8 \
            where id1={func_var};'''
        update_func = self.comSQL.create_func(self.u_function_name,
                                              execute_sql=func_sql2,
                                              var=func_var,
                                              start=20000,
                                              end=80000,
                                              step=20000)
        self.log.info(update_func)
        self.assertTrue(self.u_function_name in update_func)

        text = '------step1:创建范围分区表; expect:成功------'
        self.log.info(text)
        create_cmd = f'''drop table if exists {self.table_name};
            create table {self.table_name} (id1 int,id2 int) 
            partition by range (id1)
            (partition p00 values less than (20000),
             partition p01 values less than (40000),
             partition p02 values less than (60000));'''
        self.log.info(create_cmd)
        create_msg = self.comSQL.execut_db_sql(create_cmd)
        self.log.info(create_msg)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, create_msg,
                      '执行失败:' + text)

        text = '-----step2:首先向分区3中插入部分数据; expect:成功-----'
        self.log.info(text)
        sql = f'''select {insert_func}(40100);
            select count(*) from {self.table_name} partition for (40100);'''
        self.log.info(sql)
        msg = self.comsh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertTrue('101' in msg.splitlines()[-2].strip(), '执行失败' + text)

        text = '------step3:session1中向分区1插入数据; expect:成功------'
        self.log.info(text)
        insert_cmd = f'''select {insert_func}(100);
            select count(*) from {self.table_name} partition for (100);
            select pg_sleep(12);'''
        session_1 = ComThread(self.comsh.execut_db_sql, args=(insert_cmd,))
        session_1.setDaemon(True)
        session_1.start()
        time.sleep(1)

        text = '------step4 & step5:session2中在分区3中update数据,查看数据更新;  ' \
               'expect:update数据成功,数据更新成功------'
        self.log.info(text)
        update_cmd = f'''select {update_func}(40100);
            select * from {self.table_name} partition for (40100) limit 1;'''
        session_2 = ComThread(self.comsh.execut_db_sql, args=(update_cmd,))
        session_2.setDaemon(True)
        session_2.start()

        self.log.info('------session2执行结果------')
        session_2.join(50)
        session_2_result = session_2.get_result()
        self.log.info(session_2_result)
        self.assertTrue('8' in session_2_result.splitlines()[-2],
                        "执行失败:" + text)

        text = '------session1执行结果------'
        self.log.info(text)
        session_1.join(60)
        session_1_result = session_1.get_result()
        self.log.info(session_1_result)
        self.assertTrue('101' in session_1_result, "执行失败:" + text)

    def tearDown(self):
        text = '------step6:清理环境; expect:成功------'
        self.log.info(text)
        drop_cmd = f'''drop table {self.table_name} cascade;
            drop function {self.i_function_name};
            drop function {self.u_function_name};'''
        drop_msg = self.comsh.execut_db_sql(drop_cmd)
        self.log.info(drop_msg)
        self.assertTrue(
            self.constant.DROP_TABLE_SUCCESS in drop_msg and
            drop_msg.count(self.constant.DROP_FUNCTION_SUCCESS_MSG) == 2)
        text = '------Opengauss_Function_Lower_Lock_Level_Case0004执行完成------'
        self.log.info(text)
